|
|
The commands shown in this chapter apply to the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010. Where an entire command or certain attributes of a command have values specific to a particular switch, an exception is indicated by the following callouts:
To configure the temperatures so that the ATM switch router declares a major or minor alarm condition, use the facility-alarm command. You can configure explicit threshold temperatures (in degrees Celsius [° C]) to override the defaults for major and minor alarms. Use the no form of this command to disable alarms for that threshold and reset the threshold to the default value.
facility-alarm core-temperature {major [temperature] | minor [temperature]}
major [temperature] | Major alarm threshold temperature threshold in degrees C. The default value is 53° C. |
minor [temperature] | Minor alarm threshold temperature threshold in degrees C. The default value is 45° C. |
major is 53° C.
minor is 45° C.
Global configuration
You cannot disable or adjust the system critical alarms threshold. A "critical" alarm is standard Telco terminology for the alarm just before the system powers itself off.
The following example shows how to configure facility alarms to 50° C for major alarms, and 38° C for minor alarms.
Switch(config)# facility-alarm core-temperature major 50 Switch(config)# facility-alarm core-temperature minor 38
clear facility-alarm (Catalyst 8540 MSR)
show facility-alarm status (Catalyst 8540 MSR)
To configure the writing of records for initial connection attempts, use the failed-attempts ATM accounting file subcommand. To disable this feature, use the no form of this command.
failed-attempts [none | [regular | soft]]
none | Does not record failed attempts. |
regular | Records regular SVC/SVP numbers that originate or terminate at the switch interface. |
soft | Records soft PVC/PVP numbers that originate or terminate at the switch interface. |
regular and soft
ATM accounting file
The following example shows entering the ATM accounting file configuration mode and configuring failed-attempts to record failed attempts for SVC/SVP connections in the accounting file.
Switch(config)# atm accounting file acctng_file1 Switch(config-acct-file)# failed-attempts regular
atm accounting file
collection-modes
min-age
To format Flash memory, use the format privileged EXEC command.
format device1: [[device2:] [monlib-filename]] | Caution The following formatting procedure erases all information in the Flash memory. To prevent the loss of important data, proceed carefully. |
device1: | Device to format. The colon (:) is required. Valid devices are as follows: · bootflash: This device is the internal Flash memory. · slot0: This device is the first PC slot on the route processor card. · slot1: This device is the second PC slot on the route processor card. |
device2: | Device containing the monlib file to use for formatting device1. The colon (:) is required. Valid devices are as follows: · bootflash: This device is the internal Flash memory. · slot0: This device is the first PC slot and is the initial default device. · slot1: This device is the second PC slot on the route processor card. |
monlib-filename | Name of the ROM monitor library file (monlib file) to use for formatting device1. |
The default monlib file is the one bundled with the system software.
Privileged EXEC
Use the format command to format internal Flash memory (bootflash) or your Flash memory cards.
In some cases, you might need to insert a new PCMCIA Flash memory card and load images or backup configuration files onto it. Before you can use a new Flash memory card, you must format it.
Flash memory cards have sectors that can fail. You can reserve certain Flash memory sectors as "spares" for use when other sectors fail. Use the format command to specify between 0 and 16 sectors as spares. If you reserve a small number of spare sectors for emergencies, you do not waste space because you can use most of the Flash memory card. If you specify zero spare sectors and some sectors fail, you must reformat the Flash memory card and thereby erase all existing data.
The monlib file is the ROM monitor library. The ROM monitor uses the monlib file to access files in the Flash file system.
In the command syntax, device1 is the device to format, and device2 contains the monlib file to use. When you omit the [[device2:][monlib-filename]] argument, the system formats device1 using the monlib file that is bundled with the system software. When you omit device2 from the [[device2:][monlib-filename]] argument, the system formats device1 using the named monlib file from the device specified by the cd command. When you omit monlib-filename from the [[device2:][monlib-filename]] argument, the system formats device1 using device2's monlib file. When you specify the whole [[device2:][monlib-filename]] argument, the system formats device1 using the specified monlib file from the specified device. Note that you can specify device1's own monlib file in this argument. When the system cannot find a monlib file, the system terminates the formatting process.
The following example shows the format command that formats a Flash memory card inserted in slot 0 of the route processor card.
Switch# format slot0: Running config file on this device, proceed? [confirm]y All sectors will be erased, proceed? [confirm]y Enter volume id (up to 31 characters): <Return> Formatting sector 1 (erasing) Format device slot0 completed
When the switch returns you to the EXEC prompt, the new Flash memory card is successfully formatted and ready for use.
To configure the committed burst size for ABR or UBR soft VCs terminating on an interface, use the frame-relay bc-default interface configuration command. To disable the committed burst size, use the no form of this command.
frame-relay bc-default bc_default
bc_default | Default committed burst size in bits for ABR or UBR soft VCs terminating on this interface. |
32768
Interface configuration
Use the frame-relay bc-default interface parameter to configure the committed burst size (in bits) on the destination interface of a UBR or ABR soft VC connection.
The configured committed burst size is then effective for any subsequent connections.
The following example configures the Frame Relay committed burst size to 16384 for serial interface 11/0/0:1.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay bc-default 16384
show frame-relay connection-traffic-table-row
To create a table entry in the Frame Relay connection-traffic table, use the frame-relay connection-traffic table-row global configuration command. To delete an entry, use the no form of this command.
frame-relay connection-traffic table-row [index row-index] cirval bcval pirval [beval]
index row-index | Specifies the index of the entry created in the Frame Relay connection-traffic table. A positive integer from 1 to 1073741823. |
cirval | CIR, in bps. A positive integer from 0 to 2048000. |
bcval | Bc, in bits. A positive integer from 0 to 32768. |
pirval | Peak information rate, in bps. A positive integer from 0 to 2048000. |
beval | Excess burst size, in bits. A positive integer from 0 to 32768. The default is 32768. |
abr | vbr-nrt | ubr | Selects the ATM service category for an interworking connection. |
arrow-index | Specifies the index of the entry created in the ATM connection-traffic table, a positive integer from 1 to 1073741823. |
See "Syntax Description."
Global configuration
When you create a connection traffic table row, the Frame Relay parameters are converted into the ATM equivalent parameters and a row is added to the ATM connection-traffic table. The table index values are shared by the Frame Relay connection table and the ATM connection table. If you specify the index in the command, the index value is available in the ATM connection table.
The following example shows how to create a table entry with a row index of 150, committed information rate of 1024000, committed burst size of 16334, peak information rate of 1024000, excess burst size of 20, and the abr service category with an ATM row index of 250.
Switch# configure terminal Switch(config)# frame-relay connection-traffic-table-row index 150 1024000 16334 1024000 16334 20 abr 250
show frame-relay connection-traffic-table-row
show frame-relay interface resource
To configure discard marking thresholds on a Frame Relay interface in the input direction, use the frame-relay input queue interface configuration command. Use the no form of the command to revert to default values for the threshold.
frame-relay input-queue {abr | ubr | vbr-nrt} {discard-threshold | marking-threshold}
abr | ubr | vbr-nrt | Service categories for which the threshold is configured |
discard-threshold | Threshold where the cell is discarded. If the queue fills up above this level, any frame arriving from an external device with the DE bit set will be discarded by the interface. The default is 87 percent. |
marking-threshold | Threshold where the cell is marked for EFCI. If the queue fills up above this level, all frames arriving from an external device will have the EFCI bit set as they are converted into cells. For cells entering the Frame Relay interface from the switch fabric, the BECN bit is set in the outgoing frame header. The default is 75 percent. |
percentage | Threshold number as percentage of queue size. |
See "Syntax Description."
Interface configuration
This command affects all existing connections on the interface, as well as subsequent connections.
The following example sets the Frame Relay input queue for ABR connects to allow EFCI marking for cells over 75 percent of capacity.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay input-queue abr marking-threshold 75
show frame-relay interface resource
frame-relay output-queue
To configure an interface as DCE or NNI, use the frame-relay intf-type interface configuration command. To disable the configuration, use the no form of this command.
frame-relay intf-type {dce | nni}
DCE | NNI | Data communications equipment or Network-to-Network Interface. |
nni
Interface configuration
When you specify DCE, the ATM switch router supports only network-side PVC status management procedures. When you specify NNI, the ATM switch router supports both user-side and network-side PVC status management procedures.
The following example configures serial interface 11/0/0:1 as Frame Relay interface, type DCE.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type dce
show frame-relay interface resource
To set a full status polling interval, use the frame-relay lmi-n391dte interface configuration command. To restore the default interval value, use the no form of this command.
frame-relay lmi-n391dte keep-exchanges
keep-exchanges | Number of keep exchanges to be completed before requesting a full status message. The value must be a positive integer from 1 to 255. |
6 keep exchanges
Interface configuration
To set the full status message polling interval, use this command when the interface is configured
as NNI.
The following example shows how to set one out of every four status inquiries to request a full status response from the switch. The remaining three status inquiries request only keepalive exchanges.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type nni Switch(config-if)# frame-relay lmi-n391dte 4
To set a full status polling interval, use the frame-relay lmi-n391dte interface configuration command. To restore the default interval value, use the no form of this command.
frame-relay lmi-n391dte keep-exchanges
keep-exchanges | Number of keep exchanges to be completed before requesting a full status message. The value must be a positive integer from 1 to 255. |
6 keep exchanges
Interface configuration
To set the full status message polling interval, use this command when the interface is configured as NNI.
The following example shows how to set one out of every four status inquiries to request a full status response from the switch. The remaining three status inquiries request only keepalive exchanges.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type nni Switch(config-if)# frame-relay lmi-n391dte 4
To set the error threshold on DCE and NNI interfaces, use the frame-relay lmi-n392dce interface configuration command. To remove the setting, use the no form of this command.
frame-relay lmi-n392dce threshold
threshold | Error threshold value. The value must be a positive integer from 1 to 10. |
Two errors
Interface configuration
N392 errors must occur within the number defined by the N393 event count for the link to be down. Therefore, the threshold value for this command must be less than the count value defined in the frame-relay lmi-n393dce command.
The following example configures serial interface 11/0/0:1 with Frame Relay LMI monitoring event count to four.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay lmi-n392dce 4
frame-relay lmi-n393dce
show frame-relay lmi
To set the error threshold on DTE or NNI interfaces, use the frame-relay lmi-n392dte interface configuration command. To remove the setting, use the no form of this command.
frame-relay lmi-n392dte threshold
threshold | Error threshold value. This value must be a positive integer from 1 to 10. |
Three errors
Interface configuration
The frame-relay lmi-n392dte and frame-relay lmi-n393dte commands define the condition that causes the link to be declared down. Two "threshold" errors must occur within N393 number of events for the link to be declared down.
The following example shows how to set the LMI error threshold to six.
Switch# configure terminal Switch(config)# interface serial 1/0/0:1 Switch(config-if)# frame-relay intf-type nni Switch(config-if)# frame-relay lmi-n392dte 6
To set the monitored events count on DCE and NNI interfaces, use the frame-relay lmi-n393dce interface configuration command. To remove the setting, use the no form of this command.
frame-relay lmi-n393dce events
events | Monitored events count value. The value must be a positive integer from 1 to 10. |
Two events
Interface configuration
This command and the frame-relay lmi-n392dce command define the condition that causes the link to be down. In the Cisco implementation, N392 errors must occur within the events count for the link to be down. Therefore, the events value that you define for this command must be greater than the threshold value defined in the frame-relay lmi-n392dce command.
The following example shows how to set the LMI monitored event count to three.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type dce Switch(config-if)# frame-relay lmi-n393dce 3
frame-relay lmi-n392dce
show frame-relay lmi
To set the monitored event count on DTE and NNI interfaces, use the frame-relay lmi-n393dte interface configuration command. To remove the setting, use the no form of this command.
frame-relay lmi-n393dte events
events | Monitored events count value. This value must be a positive integer from 1 to 10. |
Four events
Interface configuration
The frame-relay lmi-n393dte and the frame-relay lmi-n392dte commands define the condition that causes the link to be declared down. N392 errors must occur within the events count for the link to be declared down.
The following example shows how to set the LMI monitored events count to three.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type NNI Switch(config-if)# frame-relay lmi-n393dte 3
To set the polling verification timer on DCE and NNI interfaces, use the frame-relay lmi-t392dce interface configuration command. To remove the current setting, use the no form of this command.
frame-relay lmi-t392dce seconds
seconds | Polling verification timer value, in seconds. This value must be a positive integer from 5 to 30. |
15 seconds
Interface configuration
The value for the timer must be greater than the DTE or NNI keepalive timer.
The following example shows how to set a polling verification timer on a DCE or NNI interface set to 20 seconds.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay intf-type dce Switch(config-if)# frame-relay lmi-t392dce 20
To select the LMI type, use the frame-relay lmi-type interface configuration command. To return to the default LMI type, use the no form of this command.
frame-relay lmi-type [ansi | cisco | q933a]
ansi | Annex D defined by the ANSI standard T1.617. |
cisco | The LMI type defined jointly by Cisco Systems and three other companies. |
q933a | ITU-T Q.933 Annex A. |
cisco
Interface configuration
The LMI type is set on a per-interface basis. If you want to display the type that is configured, use the show interface EXEC command.
The following example shows how to configure an interface for the ANSI LMI type.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# encapsulation frame-relay ietf Switch(config-if)# frame-relay lmi-type ansi Switch(config-if)# keepalive 15
show frame-relay lmi
show interface
To configure discard marking thresholds on a Frame Relay interface in the output direction, use the frame-relay output-queue interface configuration command. Use the no form of the command to revert to default values for the threshold.
frame-relay output-queue {abr | ubr | vbr-nrt} {discard-threshold | marking-threshold}
abr | ubr | vbr-nrt | Service categories for which the threshold is configured: · ABR · UBR · VBR-NRT |
discard-threshold | Threshold where the cell is discarded. If the queue fills above this level, any frame arriving from the switch with DE bit set is discarded by the interface. The default is 87 percent. |
marking-threshold | Threshold where the cell is marked for EFCI. If the queue fills above this level, all frames arriving from the switch will have the FECN bit set in the frame header as they exit the interface. For cells entering the Frame Relay interface from an external device, the BECN bit is set in the frame header as it enters the switch. The default is 75 percent. |
percentage | Percentage number. |
See "Syntax Description."
Interface configuration
This command affects all existing connections on the interface, as well as subsequent connections.
The following example shows how to set the Frame Relay output queue for ABR connects to allow EFCI marking for cells over 65 percent of capacity.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay output-queue abr marking-threshold 65
frame-relay input-queue
show frame-relay interface resource
To set the percentage of CIR overbooking, use the frame-relay overbooking command. To disable CIR overbooking, use the no form of this command.
frame-relay overbooking percent
percent | The percent of interface bandwidth from 101 to 1000. |
Disabled
Interface configuration
The allowable overbooking on an access link or interface is a number times the access link or interface speed (access rate), for example, 200 percent of the access rate. The total of all CIRs for all Frame Relay PVCs and Frame Relay soft VCs cannot exceed the CIR overbooking factor times the access rate.
Once configured and used to admit Frame Relay PVCs and Frame Relay soft VCs on an interface, the CIR overbooking factor can only be adjusted within the upper limit and the level which has been overbooked by the existing connections. Disabling the CIR overbooking factor is allowed only when the total of all CIRs for all Frame Relay PVCs and Frame Relay soft VCs does not exceed the interface access rate.
Configuring the CIR overbooking factor increases the available bit rates for the Frame Relay PVC and soft VC but does not increase the actual bandwidth (access rate) and resources available to the Frame Relay interface.
The CIR of a connection is not allowed to exceed the actual access rate of an interface even if the CIR overbooking factor is configured.
The following example configures the Frame Relay serial interface to allow overbooking the CIR to 200 percent.
Switch(config)# interface serial 1/1/0:5 Switch(config-if)# encapsulation frame-relay ietf Switch(config-if)# frame-relay overbooking 200
show frame-relay interface resource
To create a Frame Relay-to-ATM network interworking or service interworking PVC or Frame-Relay- to-Frame Relay cross-connected PVC, use the frame-relay pvc interface configuration command. To remove a Frame Relay PVC, use the no form of this command.
For Frame Relay-to-ATM network interworking, use the following syntax:
frame-relay pvc dlci [upc {pass | tag-drop}] [rx-cttr index] [tx-cttr index] networkFor Frame Relay-to-ATM service interworking, use the following syntax:
frame-relay pvc dlci [upc {pass | tag-drop}] [rx-cttr index] [tx-cttr index] serviceFor Frame Relay-to-Frame Relay cross-connection, use the following syntax:
frame-relay pvc dlci [upc {pass | tag-drop}] [rx-cttr index] [tx-cttr index] interface serialno frame-relay pvc dlci
dlci | Data-link connection identifier, ranging from 16 to 1007, which specifies a PVC in a Frame Relay network. |
upc upc | Usage parameter control, specified as pass or tag-drop. The default is pass, which derives from the per-interface default value configured through the frame-relay upc-intent command. |
rx-cttr index | Frame Relay connection-traffic table row index in the received direction. The default is 100. |
tx-cttr index | Frame Relay connection-traffic table row index in the transmitted direction. The default is 100. |
network | service {transparent | translation} | Specifies the interworking function that can be either network interworking, service interworking in transparent mode, or service interworking in translation mode. |
clp-bit {0 | 1 | map-de} | · Sets the mode of DE/CLP mapping in Frame Relay to the ATM direction. Options 0, 1, or map-DE are allowed for both network interworking and service interworking. The default is map-de. · map-de---Specifies mode 1, described in 4.2.1 of FRF.8: · 0 or 1---Specifies mode 2, described in 4.2.1 of FRF.8: |
de-bit [0 | 1 | map-de | map-clp | map-clp-or-de] | Sets the mode of CLP/DE mapping in ATM to the Frame Relay direction. For network interworking: Options map-de, or map-clp-or-de are allowed. The default value is map-clp-or-de. · map-clp-or-de---Specifies mode 1 described in 4.4.2 of FRF.5: · map-de---Specifies mode 2 described in 4.4.2 of FRF.5: For service interworking: · Options 0, 1, or map-clp are allowed. The default value is map-clp. · map-clp---Specifies mode 1, described in 4.2.2 of FRF.8: · 0 or 1---Specifies mode 2, described in 4.2.2 of FRF.8: |
card/subcard/port | Card, subcard, and port number for the ATM interface. |
vpi | VPI of this PVC, from 0 to 255. The VPI is an 8-bit field in the header of the ATM cell. The VPI value is unique only on an interface, not throughout the ATM network (it has local significance only). |
vci | VCI of this PVC. The range is normally 32 to 16383, but can be expanded from 5 to 16383 in manual-well-known-vc mode. The VCI is a 16-bit field in the header of the ATM cell. The VCI value is unique only on a single interface, not throughout the ATM network (it has local significance only). |
pd {off | on} | Specifies the intelligent packet discard option as on or off. The default is off. |
efci-bit {0 | map-fecn} | Sets the mode of FECN/EFCI mapping in Frame Relay to the ATM direction. The default value is 0. |
card/subcard/port:cgn | Card, subcard, port number, and channel group number for the serial interface. |
encap {aal5mux ip | aal5snap} | AAL encapsulation type applies only to terminating connections. · aal5mux ip---A MUX-type virtual connection. (For transparent mode only.) · aal5snap--- LLC/SNAP precedes the protocol datagram. This is the only encapsulation supported for Inverse ARP. (For translation mode only.) |
inarp minutes | Specifies how often Inverse ARP datagrams are sent on this virtual connection and applies only to terminating connections. (For service interworking translation mode only.) The default value is 15 minutes. |
See "Syntax Description."
Interface configuration
You can set the upc option to tag or drop only under the following conditions:
Refer to the frame-relay connection-traffic-table-row command for information on configuring the connection-traffic table specified by index.
The following example creates a service translation cross-connection between Frame Relay interface 11/0/0:1 on PVC 66 and ATM interface 10/0/0 100 250.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay pvc 66 rx-cttr 5 tx-cttr 5 service translation interface atm 10/0/0 100 250
To create Frame Relay soft PVCs on the switch, use the frame-relay soft-vc interface configuration command. You can use this command to create soft PVCs between two Frame Relay connections or between a Frame Relay connection and an ATM connection.
To create a soft PVC between two Frame Relay connections, use the following syntax:
frame-relay soft-vc dlci_a dest-address address [dlci dlci_b] [upc upc]To create a soft PVC between a Frame Relay connection and an ATM connection, use the following syntax:
frame-relay soft-vc dlci_a dest-address address vc vpi_b vci_b [upc upc]For existing Frame Relay soft PVCs, you can enable or disable the connection and use the redo-explicit keyword to respecify the explicit-path configuration.
frame-relay soft-vc dlci_a [enable | disable]To remove Frame Relay soft PVCs, use the no form of this command.
no frame-relay soft-vc dlci-a
dlci_a | Specifies the data-link connection identifier, ranging from 16 to 1007, which specifies a PVC in a Frame Relay network. |
dest-address address | Specifies the destination address. |
dlci dlci_b | Specifies the data-link connection identifier, ranging from 16 to 1007, which specifies a PVC in a Frame Relay network. |
vbi_b | ATM virtual path identifier. |
vci_b | ATM virtual channel identifier. |
upc upc | Usage parameter control, specified as pass | tag-drop. It gets its default value from the per-interface default value configured with the frame-relay upc-intent command. |
rx-cttr index | Connection traffic table row index in the received direction. The default is 100. The cttr should be configured before using the atm pvc command. Refer to the atm connection-traffic-table-row command for information on configuring the rx-cttr. |
tx-cttr index | Connection traffic table row index in the transmitted direction. The default is 100. The cttr should be configured before using the atm pvc command. Refer to the atm connection-traffic-table-row command for information on configuring the tx-cttr. |
pd {on | off} | Specifies the intelligent packet discard option as on or off. The default is off. |
retry-interval | Configures retry interval timers for a soft PVC. |
first retry-interval | Retry interval for the first retry after the first failed attempt, specified in milliseconds. If the first retry after the first failed attempt also fails, the subsequent attempts are made at intervals computed using the first retry-interval, as follows: (2 ** (k-1)) * first retry-interval Where the value of k is 1 for the first retry after the first failed attempt and is incremented by 1 for every subsequent attempt. Range is from 100 to 3600000 milliseconds; the default is 5000 milliseconds. |
maximum | The maximum retry interval between any two attempts, specified in seconds. Once the retry interval is computed in the first retry-interval and becomes equal to or greater than the maximum retry-interval configured, the subsequent retries are done at regular intervals of maximum retry-interval seconds until the call is established. Range is from 1 to 65535 seconds; the default is 60. |
network | Specifies the interworking function, which can be either network or service interworking. For soft PVCs that originate from a Frame Relay interface and end on a Frame Relay interface, the default is network interworking. For soft PVCs that originate from a Frame Relay interface and end on an ATM interface, the default is service interworking. |
clp-bit | Sets the mode of DE/CLP mapping in the Frame Relay to ATM direction. Values 0, 1, or map-de are allowed for both network interworking and service interworking. The default is map-de. |
de-bit | Sets the mode of DE/CLP mapping in ATM to Frame Relay direction. · For network interworking, values map-de or map-clp-or-de are allowed. · For service interworking, values 0, 1, or map-clp are allowed. The default is map-clp. |
[network | service | Specifies the interworking function, which can be either network interworking or service interworking in transparent mode, or service interworking in translation mode. |
efci-bit | For service interworking only. Sets the mode of FECN/EFCI mapping in the Frame Relay-to-ATM direction. The default value is 0. Values 0 or map-fecn are allowed. |
enable | Enables the soft connection, which allows it to be set up. This is the default for the initial soft connection configuration. However, if the frame-relay soft-vc command is re-entered for an existing connection, the default is to remain in the current enabled or disabled state. |
disable | Disables the soft connection, which prevents it from being set up initially, or tears down an existing connection. |
explicit-path | The PNNI explicit path that is manually configured for routing a soft PVC, using the atm pnni explicit-path command. |
precedence | The precedence number by which ATM PNNI explicit paths are assigned, from |
name path-name | The name of the ATM PNNI explicit path for routing soft PVCs. |
identifier path-id | The name of the ATM PNNI explicit path for routing soft PVCs. |
upto | Allows a subset of a longer explicit path to be used, so that all included nodes after the specified entry-index are disregarded. If the destination is reachable at any next node or segment target, the remaining included nodes in the explicit path are disregarded automatically. |
only-explicit | If one or more explicit paths have been specified and the explicit path fails, the soft connection remains down until it is retried at its next retry interval. If this option is not specified, the system will use the standard on-demand routing instead of waiting for the next retry interval. |
redo-explicit | Applies only to existing soft connections and allows explicit paths to be respecified without tearing down connections. Existing connections are unaffected unless a reroute takes place, and then they use the newer explicit-path configuration. |
See "Syntax Description."
Interface configuration
Obtain the destination port address before configuring a soft PVC by using the show atm interface or show atm addresses command on the destination switch.
The following list identifies reasons why the creation of a soft PVC is unsuccessful:
Up to three explicit paths can be assigned to a soft VC, using precedence numbers 1 through 3. The precedence 1 explicit path is considered the primary path and is tried first. If it fails, then the next precedence path is tried. Explicit paths can be specified either by name or by identifier.
The explicit-path options can be changed without tearing down an existing Frame Relay soft PVC. Use the redo-explicit form of the command to respecify all of the explicit-path options.
After configuring a Frame Relay soft PVC, use the show vc interface command on the source node (specifying the serial interface and DLCI) to verify that the soft PVC has succeeded and to see the explicit path taken.
The following example shows how to create a soft PVC between two Frame Relay connections.
Switch# configure terminal Switch(config-if)# frame-relay soft-vc 50 dest-address 47.0091.8100.0000.00e0.1e79.8803.4000.0c81.8020.00 dlci 50 upc pass
The following example shows how to create a soft PVC between a Frame Relay connection and an ATM connection.
Switch# configure terminal Switch(config-if)# frame-relay soft-vc 60 dest-address 47.0091.8100.0000.0060.3e5b.7201.4000.0c80.8000.00 vc 0 100
The following example shows these connections via the show vc command.
Switch# show vc interface serial3/0/0:1 Interface Conn-Id Type X-Interface X-Conn-Id Encap Status Serial3/0/0:1 50 SoftVC Serial3/0/0:2 50 UP Serial3/0/0:1 55 PVC Serial3/0/0:2 55 UP Serial3/0/0:1 60 SoftVC ATM1/1/1 0/35 UP Serial3/0/0:1 66 PVC Serial3/0/0:2 66 UP
In the show vc example above, the Frame Relay-to-Frame Relay connection originates from Serial 3/0/0:1 and terminates at Serial 3/0/0:2. The Frame Relay-to-ATM connection originates from Serial 3/0/0:1 and goes out through ATM 1/1/1 and ends on an ATM interface on an adjacent switch.
The following example shows how to manually configure an explicit path between two Frame Relay connections. In this example, if the explicit path fails, standard routing is used.
Switch# configure terminal Switch(config)# interface atm 0/1/3 Switch(config-if)# frame-relay soft-vc 100 dest-address 47.0091.8100.0000.1061.705b.d900.4000.0c81.9000.00 dlci 100 explicit-path 1 name chicago.path1
The following example shows how to use the redo-explicit keyword to modify an existing explicit-path configuration to add a second alternate explicit path and to prevent standard routing from being used should both explicit paths fail. Note that the system prompts you to confirm the changes.
Switch(config)# interface atm 0/1/3 Switch(config-if)# frame-relay soft-vc 100 redo-explicit explicit-path 1 name chicago.path1 explicit-path 2 name chicago.path2 only-explicit Modify with new explicit path options [yes], or abort changes [no]? [yes/no]:y
The following example shows how to remove all explicit paths from an existing Frame Relay soft PVC by using the redo-explicit keyword, with no other options specified. The path will not be changed until a reroute occurs.
Switch(config)# interface atm 0/1/3 Switch(config-if)# frame-relay soft-vc 100 redo-explicit Modify with new explicit path options [yes], or abort changes [no]? [yes/no]:y
atm pnni explicit-path
atm route-optimization (interface)
atm route-optimization (EXEC)
atm soft-vc
atm soft-vp
show atm pnni explicit-paths
show atm vc
show vc
To configure the UPC to be programmed for the soft VCs terminating on an interface, and to configure the default value for the upc option in the frame-relay pvc command, use the frame-relay upc-intent interface configuration command. To assign the default value, use the no form of this command.
frame-relay upc-intent {pass | tag-drop}
pass | tag-drop | Usage parameter control, specified as pass or tag-drop. |
Pass
Interface configuration
This command determines the UPC to use for SVCs and for the destination leg of soft VCs. If you want to configure policing, you can apply it once for traffic entering a network.
The following example shows how to set the intended UPC for SVCs on an interface to tag-drop.
Switch# configure terminal Switch(config)# interface serial 11/0/0:1 Switch(config-if)# frame-relay upc-intent tag-drop
To specify the type of framing used by the port on a Frame Relay port adapter, use the framing controller configuration command. To restore the default framing type, use the no form of this command.
For the channelized DS3 (CDS3) Frame Relay port adapter, use the following syntax:
framing {c-bit | m23}For the channelized E1 (CE1) Frame Relay port adapter, use the following syntax:
framing {crc | no-crc4}
c-bit | m23 | Specifies that either C-bit framing or M23 framing is used for the CDS3 Frame Relay controller. |
crc4 | no-crc4 | Specifies CRC-4 E1 framing for the CE1 Frame Relay controller. To select E1 framing without CRC-4 generation, use the no-crc4 option. |
CDS3 Frame Relay port adapters: m23
CE1 Frame Relay port adapters: crc4
Controller configuration
The DS3 port adapter has a similar command, but the Frame Relay port adapter does not support the same command options.
The following example shows how to set the framing for the CE1 Frame Relay port adapter to no CRC4.
Switch# configure terminal Switch(config)# controller e1 11/0/0 Switch(config-controller)# framing no-crc4
Use the framing controller interface configuration command to select the frame type for the data line.
framing framingmode
framingmode | For DS3, framingmode is as follows: m23adm | m23plcp | cbitadm | cbitplcp For E3, framingmode is as follows: g832adm | g751adm | g751plcp For E1, framingmode is as follows: crc4adm | crc4plcp | pcm30adm | pcm30plcp For T1, framingmode is as follows: esfplcp | sfplcp | sfadmn | esfadmn |
DS3 default is cbitplcp.
E3 default is g832adm.
E1 default is crc4plcp.
T1 default is esfplcp.
Interface configuration
In the DS3 environment, this subcommand allows selection of DS3 framing mode to M23 ADM, M23 PLCP, C-Bit ADM, or C-Bit PLCP.
In the E3 environment, this subcommand allows selection of E 3 framing mode to G.751 PLCP, G.751 ADM, or G.832 ADM.
The following example shows how to select esfadm as the frame type.
Switch# configure terminal Switch(config)# interface atm 3/0/0 Switch(config-if)# framing esfadm
Posted: Mon Aug 16 14:41:59 PDT 1999
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